Respuesta :

yousifmona44

we have M is durectly porpotional to r^2

so M=(k)r^2

and when r=2, m=14

so 14=(k)(2)^2

k=14/4 =7/2

so when r=12

m= (7/2)(12)^2 =(7/2)(144) = 504

Answer:

504 mathswatch correct

Step-by-step explanation:

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